Year Dollars 1992-01-01 5144654 1997-01-01 11554794 2002-01-01 10054147 2003-01-01 18006019 2004-01-01 9267575 2005-01-01 18515684 2006-01-01 47660606 2007-01-01 55993063 2008-01-01 29455487 2009-01-01 46439734 2010-01-01 34462776 2011-01-01 14043719 2012-01-01 14681035 2013-01-01 31194514 2014-01-01 21204807 2015-01-01 18217142 2016-01-01 14186198